This inverter circuit for a capacitive discharge ignition system was found in a Radio Electronics magazine from February 1967. The power transistors must be equipped with heatsinks.
This simple circuit controls the brightness of an LED from LDRs, NTCs, PTCs or other resistive sensors....
We found this circuit in a 1990 documentation. It draws one out of 10 numbers and during the draw...
The circuit shown in figure 3 uses a programmable unijunction transistor (PUT) of the BRY39 type...